palindrome

[chodmama]

my program is as follows:

#include<stdio.h>
#include<string.h>
#define size 100

void main()
{
char strsrc[size];
char strtmp[size];

printf("\n Enter String:= "); 
gets(strsrc);

strcpy(strtmp,strsrc);
strrev(strtmp);

if(strcmp(strsrc,strtmp)==0)
printf("\n Entered string \"%s\" ispalindrome",strsrc);
else
printf("\n Entered string \"%s\" is not 
palindrome",strsrc);
}

what i did so far is wait for a user input and then check for palindromes. How do i change it so that I can use a file with a few lines to check each line if it is a palindrome and go on till the eof.